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                  <a href="#ostree-In-memory-modifiable-filesystem-tree.description" class="shortcut">Description</a></span>
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<div class="refentry">
<a name="ostree-In-memory-modifiable-filesystem-tree"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="ostree-In-memory-modifiable-filesystem-tree.top_of_page"></a>In-memory modifiable filesystem tree</span></h2>
<p>In-memory modifiable filesystem tree — Modifiable filesystem tree</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="ostree-In-memory-modifiable-filesystem-tree.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_proto_type">
<col class="functions_proto_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#OstreeMutableTree" title="OstreeMutableTree"><span class="returnvalue">OstreeMutableTree</span></a> *
</td>
<td class="function_name">
<a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#ostree-mutable-tree-new" title="ostree_mutable_tree_new ()">ostree_mutable_tree_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#OstreeMutableTree" title="OstreeMutableTree"><span class="returnvalue">OstreeMutableTree</span></a> *
</td>
<td class="function_name">
<a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#ostree-mutable-tree-new-from-commit" title="ostree_mutable_tree_new_from_commit ()">ostree_mutable_tree_new_from_commit</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#OstreeMutableTree" title="OstreeMutableTree"><span class="returnvalue">OstreeMutableTree</span></a> *
</td>
<td class="function_name">
<a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#ostree-mutable-tree-new-from-checksum" title="ostree_mutable_tree_new_from_checksum ()">ostree_mutable_tree_new_from_checksum</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#ostree-mutable-tree-check-error" title="ostree_mutable_tree_check_error ()">ostree_mutable_tree_check_error</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#ostree-mutable-tree-set-metadata-checksum" title="ostree_mutable_tree_set_metadata_checksum ()">ostree_mutable_tree_set_metadata_checksum</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <span class="returnvalue">char</span> *
</td>
<td class="function_name">
<a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#ostree-mutable-tree-get-metadata-checksum" title="ostree_mutable_tree_get_metadata_checksum ()">ostree_mutable_tree_get_metadata_checksum</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#ostree-mutable-tree-set-contents-checksum" title="ostree_mutable_tree_set_contents_checksum ()">ostree_mutable_tree_set_contents_checksum</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <span class="returnvalue">char</span> *
</td>
<td class="function_name">
<a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#ostree-mutable-tree-get-contents-checksum" title="ostree_mutable_tree_get_contents_checksum ()">ostree_mutable_tree_get_contents_checksum</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#ostree-mutable-tree-replace-file" title="ostree_mutable_tree_replace_file ()">ostree_mutable_tree_replace_file</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#ostree-mutable-tree-remove" title="ostree_mutable_tree_remove ()">ostree_mutable_tree_remove</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#ostree-mutable-tree-ensure-dir" title="ostree_mutable_tree_ensure_dir ()">ostree_mutable_tree_ensure_dir</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#ostree-mutable-tree-lookup" title="ostree_mutable_tree_lookup ()">ostree_mutable_tree_lookup</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#ostree-mutable-tree-ensure-parent-dirs" title="ostree_mutable_tree_ensure_parent_dirs ()">ostree_mutable_tree_ensure_parent_dirs</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#ostree-mutable-tree-walk" title="ostree_mutable_tree_walk ()">ostree_mutable_tree_walk</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">GHashTable</span> *
</td>
<td class="function_name">
<a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#ostree-mutable-tree-get-subdirs" title="ostree_mutable_tree_get_subdirs ()">ostree_mutable_tree_get_subdirs</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">GHashTable</span> *
</td>
<td class="function_name">
<a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#ostree-mutable-tree-get-files" title="ostree_mutable_tree_get_files ()">ostree_mutable_tree_get_files</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#ostree-mutable-tree-fill-empty-from-dirtree" title="ostree_mutable_tree_fill_empty_from_dirtree ()">ostree_mutable_tree_fill_empty_from_dirtree</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="ostree-In-memory-modifiable-filesystem-tree.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="other_proto_type">
<col class="other_proto_name">
</colgroup>
<tbody><tr>
<td class="typedef_keyword">typedef</td>
<td class="function_name"><a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#OstreeMutableTree" title="OstreeMutableTree">OstreeMutableTree</a></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="ostree-In-memory-modifiable-filesystem-tree.description"></a><h2>Description</h2>
<p>In order to commit content into an <a class="link" href="ostree-OstreeRepo.html#OstreeRepo" title="OstreeRepo"><span class="type">OstreeRepo</span></a>, it must first be
imported into an <a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#OstreeMutableTree" title="OstreeMutableTree"><span class="type">OstreeMutableTree</span></a>.  There are several high level
APIs to create an initiable <a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#OstreeMutableTree" title="OstreeMutableTree"><span class="type">OstreeMutableTree</span></a> from a physical
filesystem directory, but they may also be computed
programmatically.</p>
</div>
<div class="refsect1">
<a name="ostree-In-memory-modifiable-filesystem-tree.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="ostree-mutable-tree-new"></a><h3>ostree_mutable_tree_new ()</h3>
<pre class="programlisting"><a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#OstreeMutableTree" title="OstreeMutableTree"><span class="returnvalue">OstreeMutableTree</span></a> *
ostree_mutable_tree_new (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<div class="refsect3">
<a name="ostree-mutable-tree-new.returns"></a><h4>Returns</h4>
<p>A new tree. </p>
<p><span class="annotation">[<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="ostree-mutable-tree-new-from-commit"></a><h3>ostree_mutable_tree_new_from_commit ()</h3>
<pre class="programlisting"><a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#OstreeMutableTree" title="OstreeMutableTree"><span class="returnvalue">OstreeMutableTree</span></a> *
ostree_mutable_tree_new_from_commit (<em class="parameter"><code><a class="link" href="ostree-OstreeRepo.html#OstreeRepo" title="OstreeRepo"><span class="type">OstreeRepo</span></a> *repo</code></em>,
                                     <em class="parameter"><code>const <span class="type">char</span> *rev</code></em>,
                                     <em class="parameter"><code><span class="type">GError</span> **error</code></em>);</pre>
<p>Creates a new OstreeMutableTree with the contents taken from the given commit.
The data will be loaded from the repo lazily as needed.</p>
<div class="refsect3">
<a name="ostree-mutable-tree-new-from-commit.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>repo</p></td>
<td class="parameter_description"><p>The repo which contains the objects refered by the checksums.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>rev</p></td>
<td class="parameter_description"><p>ref or SHA-256 checksum</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="ostree-mutable-tree-new-from-commit.returns"></a><h4>Returns</h4>
<p>A new tree. </p>
<p><span class="annotation">[<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>]</span></p>
</div>
<p class="since">Since: 2021.5</p>
</div>
<hr>
<div class="refsect2">
<a name="ostree-mutable-tree-new-from-checksum"></a><h3>ostree_mutable_tree_new_from_checksum ()</h3>
<pre class="programlisting"><a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#OstreeMutableTree" title="OstreeMutableTree"><span class="returnvalue">OstreeMutableTree</span></a> *
ostree_mutable_tree_new_from_checksum (<em class="parameter"><code><a class="link" href="ostree-OstreeRepo.html#OstreeRepo" title="OstreeRepo"><span class="type">OstreeRepo</span></a> *repo</code></em>,
                                       <em class="parameter"><code>const <span class="type">char</span> *contents_checksum</code></em>,
                                       <em class="parameter"><code>const <span class="type">char</span> *metadata_checksum</code></em>);</pre>
<p>Creates a new OstreeMutableTree with the contents taken from the given repo
and checksums.  The data will be loaded from the repo lazily as needed.</p>
<div class="refsect3">
<a name="ostree-mutable-tree-new-from-checksum.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>repo</p></td>
<td class="parameter_description"><p>The repo which contains the objects refered by the checksums.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>contents_checksum</p></td>
<td class="parameter_description"><p>dirtree checksum</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>metadata_checksum</p></td>
<td class="parameter_description"><p>dirmeta checksum</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="ostree-mutable-tree-new-from-checksum.returns"></a><h4>Returns</h4>
<p>A new tree. </p>
<p><span class="annotation">[<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>]</span></p>
</div>
<p class="since">Since: 2018.7</p>
</div>
<hr>
<div class="refsect2">
<a name="ostree-mutable-tree-check-error"></a><h3>ostree_mutable_tree_check_error ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
ostree_mutable_tree_check_error (<em class="parameter"><code><a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#OstreeMutableTree" title="OstreeMutableTree"><span class="type">OstreeMutableTree</span></a> *self</code></em>,
                                 <em class="parameter"><code><span class="type">GError</span> **error</code></em>);</pre>
<p>In some cases, a tree may be in a "lazy" state that loads
data in the background; if an error occurred during a non-throwing
API call, it will have been cached.  This function checks for a
cached error.  The tree remains in error state.</p>
<div class="refsect3">
<a name="ostree-mutable-tree-check-error.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>self</p></td>
<td class="parameter_description"><p>Tree</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="ostree-mutable-tree-check-error.returns"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> on success</p>
</div>
<p class="since">Since: 2018.7</p>
</div>
<hr>
<div class="refsect2">
<a name="ostree-mutable-tree-set-metadata-checksum"></a><h3>ostree_mutable_tree_set_metadata_checksum ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
ostree_mutable_tree_set_metadata_checksum
                               (<em class="parameter"><code><a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#OstreeMutableTree" title="OstreeMutableTree"><span class="type">OstreeMutableTree</span></a> *self</code></em>,
                                <em class="parameter"><code>const <span class="type">char</span> *checksum</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="ostree-mutable-tree-get-metadata-checksum"></a><h3>ostree_mutable_tree_get_metadata_checksum ()</h3>
<pre class="programlisting">const <span class="returnvalue">char</span> *
ostree_mutable_tree_get_metadata_checksum
                               (<em class="parameter"><code><a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#OstreeMutableTree" title="OstreeMutableTree"><span class="type">OstreeMutableTree</span></a> *self</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="ostree-mutable-tree-set-contents-checksum"></a><h3>ostree_mutable_tree_set_contents_checksum ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
ostree_mutable_tree_set_contents_checksum
                               (<em class="parameter"><code><a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#OstreeMutableTree" title="OstreeMutableTree"><span class="type">OstreeMutableTree</span></a> *self</code></em>,
                                <em class="parameter"><code>const <span class="type">char</span> *checksum</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="ostree-mutable-tree-get-contents-checksum"></a><h3>ostree_mutable_tree_get_contents_checksum ()</h3>
<pre class="programlisting">const <span class="returnvalue">char</span> *
ostree_mutable_tree_get_contents_checksum
                               (<em class="parameter"><code><a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#OstreeMutableTree" title="OstreeMutableTree"><span class="type">OstreeMutableTree</span></a> *self</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="ostree-mutable-tree-replace-file"></a><h3>ostree_mutable_tree_replace_file ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
ostree_mutable_tree_replace_file (<em class="parameter"><code><a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#OstreeMutableTree" title="OstreeMutableTree"><span class="type">OstreeMutableTree</span></a> *self</code></em>,
                                  <em class="parameter"><code>const <span class="type">char</span> *name</code></em>,
                                  <em class="parameter"><code>const <span class="type">char</span> *checksum</code></em>,
                                  <em class="parameter"><code><span class="type">GError</span> **error</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="ostree-mutable-tree-remove"></a><h3>ostree_mutable_tree_remove ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
ostree_mutable_tree_remove (<em class="parameter"><code><a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#OstreeMutableTree" title="OstreeMutableTree"><span class="type">OstreeMutableTree</span></a> *self</code></em>,
                            <em class="parameter"><code>const <span class="type">char</span> *name</code></em>,
                            <em class="parameter"><code><span class="type">gboolean</span> allow_noent</code></em>,
                            <em class="parameter"><code><span class="type">GError</span> **error</code></em>);</pre>
<p>Remove the file or subdirectory named <em class="parameter"><code>name</code></em>
 from the mutable tree <em class="parameter"><code>self</code></em>
.</p>
<div class="refsect3">
<a name="ostree-mutable-tree-remove.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>self</p></td>
<td class="parameter_description"><p>Tree</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>name</p></td>
<td class="parameter_description"><p>Name of file or subdirectory to remove</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>allow_noent</p></td>
<td class="parameter_description"><p>If <em class="parameter"><code>FALSE</code></em>
, an error will be thrown if <em class="parameter"><code>name</code></em>
does not exist in the tree</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>a <span class="type">GError</span></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: 2018.9</p>
</div>
<hr>
<div class="refsect2">
<a name="ostree-mutable-tree-ensure-dir"></a><h3>ostree_mutable_tree_ensure_dir ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
ostree_mutable_tree_ensure_dir (<em class="parameter"><code><a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#OstreeMutableTree" title="OstreeMutableTree"><span class="type">OstreeMutableTree</span></a> *self</code></em>,
                                <em class="parameter"><code>const <span class="type">char</span> *name</code></em>,
                                <em class="parameter"><code><a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#OstreeMutableTree" title="OstreeMutableTree"><span class="type">OstreeMutableTree</span></a> **out_subdir</code></em>,
                                <em class="parameter"><code><span class="type">GError</span> **error</code></em>);</pre>
<p>Returns the subdirectory of self with filename <em class="parameter"><code>name</code></em>
, creating an empty one
it if it doesn't exist.</p>
<div class="refsect3">
<a name="ostree-mutable-tree-ensure-dir.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>self</p></td>
<td class="parameter_description"><p>Tree</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>name</p></td>
<td class="parameter_description"><p>Name of subdirectory of self to retrieve/creates</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>out_subdir</p></td>
<td class="parameter_description"><p>the subdirectory. </p></td>
<td class="parameter_annotations"><span class="annotation">[<a href="http://foldoc.org/out"><span class="acronym">out</span></a>][<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>][<a href="http://foldoc.org/optional"><span class="acronym">optional</span></a>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>a <span class="type">GError</span></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="ostree-mutable-tree-lookup"></a><h3>ostree_mutable_tree_lookup ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
ostree_mutable_tree_lookup (<em class="parameter"><code><a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#OstreeMutableTree" title="OstreeMutableTree"><span class="type">OstreeMutableTree</span></a> *self</code></em>,
                            <em class="parameter"><code>const <span class="type">char</span> *name</code></em>,
                            <em class="parameter"><code><span class="type">char</span> **out_file_checksum</code></em>,
                            <em class="parameter"><code><a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#OstreeMutableTree" title="OstreeMutableTree"><span class="type">OstreeMutableTree</span></a> **out_subdir</code></em>,
                            <em class="parameter"><code><span class="type">GError</span> **error</code></em>);</pre>
<p>Lookup <em class="parameter"><code>name</code></em>
 and returns <em class="parameter"><code>out_file_checksum</code></em>
 or <em class="parameter"><code>out_subdir</code></em>
 depending on its
file type.</p>
<div class="refsect3">
<a name="ostree-mutable-tree-lookup.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>self</p></td>
<td class="parameter_description"><p>Tree</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>name</p></td>
<td class="parameter_description"><p>name</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>out_file_checksum</p></td>
<td class="parameter_description"><p>checksum. </p></td>
<td class="parameter_annotations"><span class="annotation">[<a href="http://foldoc.org/out"><span class="acronym">out</span></a>][<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>][<a href="http://foldoc.org/nullable"><span class="acronym">nullable</span></a>][<a href="http://foldoc.org/optional"><span class="acronym">optional</span></a>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>out_subdir</p></td>
<td class="parameter_description"><p>subdirectory. </p></td>
<td class="parameter_annotations"><span class="annotation">[<a href="http://foldoc.org/out"><span class="acronym">out</span></a>][<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>][<a href="http://foldoc.org/nullable"><span class="acronym">nullable</span></a>][<a href="http://foldoc.org/optional"><span class="acronym">optional</span></a>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>a <span class="type">GError</span></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="ostree-mutable-tree-lookup.returns"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> on success and either <em class="parameter"><code>out_file_checksum</code></em>
or <em class="parameter"><code>out_subdir</code></em>
are
filled, <code class="literal">FALSE</code> otherwise.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="ostree-mutable-tree-ensure-parent-dirs"></a><h3>ostree_mutable_tree_ensure_parent_dirs ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
ostree_mutable_tree_ensure_parent_dirs
                               (<em class="parameter"><code><a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#OstreeMutableTree" title="OstreeMutableTree"><span class="type">OstreeMutableTree</span></a> *self</code></em>,
                                <em class="parameter"><code><span class="type">GPtrArray</span> *split_path</code></em>,
                                <em class="parameter"><code>const <span class="type">char</span> *metadata_checksum</code></em>,
                                <em class="parameter"><code><a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#OstreeMutableTree" title="OstreeMutableTree"><span class="type">OstreeMutableTree</span></a> **out_parent</code></em>,
                                <em class="parameter"><code><span class="type">GError</span> **error</code></em>);</pre>
<p>Create all parent trees necessary for the given <em class="parameter"><code>split_path</code></em>
 to
exist.</p>
<div class="refsect3">
<a name="ostree-mutable-tree-ensure-parent-dirs.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>self</p></td>
<td class="parameter_description"><p>Tree</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>split_path</p></td>
<td class="parameter_description"><p>File path components. </p></td>
<td class="parameter_annotations"><span class="annotation">[<a href="http://foldoc.org/element-type"><span class="acronym">element-type</span></a> utf8]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>metadata_checksum</p></td>
<td class="parameter_description"><p>SHA256 checksum for metadata</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>out_parent</p></td>
<td class="parameter_description"><p>The parent tree. </p></td>
<td class="parameter_annotations"><span class="annotation">[<a href="http://foldoc.org/out"><span class="acronym">out</span></a>][<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>][<a href="http://foldoc.org/optional"><span class="acronym">optional</span></a>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>a <span class="type">GError</span></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="ostree-mutable-tree-walk"></a><h3>ostree_mutable_tree_walk ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
ostree_mutable_tree_walk (<em class="parameter"><code><a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#OstreeMutableTree" title="OstreeMutableTree"><span class="type">OstreeMutableTree</span></a> *self</code></em>,
                          <em class="parameter"><code><span class="type">GPtrArray</span> *split_path</code></em>,
                          <em class="parameter"><code><span class="type">guint</span> start</code></em>,
                          <em class="parameter"><code><a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#OstreeMutableTree" title="OstreeMutableTree"><span class="type">OstreeMutableTree</span></a> **out_subdir</code></em>,
                          <em class="parameter"><code><span class="type">GError</span> **error</code></em>);</pre>
<p>Traverse <em class="parameter"><code>start</code></em>
 number of elements starting from <em class="parameter"><code>split_path</code></em>
; the
child will be returned in <em class="parameter"><code>out_subdir</code></em>
.</p>
<div class="refsect3">
<a name="ostree-mutable-tree-walk.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>self</p></td>
<td class="parameter_description"><p>Tree</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>split_path</p></td>
<td class="parameter_description"><p>Split pathname. </p></td>
<td class="parameter_annotations"><span class="annotation">[<a href="http://foldoc.org/element-type"><span class="acronym">element-type</span></a> utf8]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>start</p></td>
<td class="parameter_description"><p>Descend from this number of elements in <em class="parameter"><code>split_path</code></em>
</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>out_subdir</p></td>
<td class="parameter_description"><p>Target parent. </p></td>
<td class="parameter_annotations"><span class="annotation">[<a href="http://foldoc.org/out"><span class="acronym">out</span></a>][<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>Error</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="ostree-mutable-tree-get-subdirs"></a><h3>ostree_mutable_tree_get_subdirs ()</h3>
<pre class="programlisting"><span class="returnvalue">GHashTable</span> *
ostree_mutable_tree_get_subdirs (<em class="parameter"><code><a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#OstreeMutableTree" title="OstreeMutableTree"><span class="type">OstreeMutableTree</span></a> *self</code></em>);</pre>
<div class="refsect3">
<a name="ostree-mutable-tree-get-subdirs.returns"></a><h4>Returns</h4>
<p>All children directories. </p>
<p><span class="annotation">[<a href="http://foldoc.org/transfer%20none"><span class="acronym">transfer none</span></a>][<a href="http://foldoc.org/element-type"><span class="acronym">element-type</span></a> utf8 OstreeMutableTree]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="ostree-mutable-tree-get-files"></a><h3>ostree_mutable_tree_get_files ()</h3>
<pre class="programlisting"><span class="returnvalue">GHashTable</span> *
ostree_mutable_tree_get_files (<em class="parameter"><code><a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#OstreeMutableTree" title="OstreeMutableTree"><span class="type">OstreeMutableTree</span></a> *self</code></em>);</pre>
<div class="refsect3">
<a name="ostree-mutable-tree-get-files.returns"></a><h4>Returns</h4>
<p>All children files (the value is a checksum). </p>
<p><span class="annotation">[<a href="http://foldoc.org/transfer%20none"><span class="acronym">transfer none</span></a>][<a href="http://foldoc.org/element-type"><span class="acronym">element-type</span></a> utf8 utf8]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="ostree-mutable-tree-fill-empty-from-dirtree"></a><h3>ostree_mutable_tree_fill_empty_from_dirtree ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
ostree_mutable_tree_fill_empty_from_dirtree
                               (<em class="parameter"><code><a class="link" href="ostree-In-memory-modifiable-filesystem-tree.html#OstreeMutableTree" title="OstreeMutableTree"><span class="type">OstreeMutableTree</span></a> *self</code></em>,
                                <em class="parameter"><code><a class="link" href="ostree-OstreeRepo.html#OstreeRepo" title="OstreeRepo"><span class="type">OstreeRepo</span></a> *repo</code></em>,
                                <em class="parameter"><code>const <span class="type">char</span> *contents_checksum</code></em>,
                                <em class="parameter"><code>const <span class="type">char</span> *metadata_checksum</code></em>);</pre>
<p>Merges <em class="parameter"><code>self</code></em>
 with the tree given by <em class="parameter"><code>contents_checksum</code></em>
 and
<em class="parameter"><code>metadata_checksum</code></em>
, but only if it's possible without writing new objects to
the <em class="parameter"><code>repo</code></em>
.  We can do this if either <em class="parameter"><code>self</code></em>
 is empty, the tree given by
<em class="parameter"><code>contents_checksum</code></em>
 is empty or if both trees already have the same
<em class="parameter"><code>contents_checksum</code></em>
.</p>
<div class="refsect3">
<a name="ostree-mutable-tree-fill-empty-from-dirtree.returns"></a><h4>Returns</h4>
<p> <em class="parameter"><code>TRUE</code></em>
if merge was successful, <em class="parameter"><code>FALSE</code></em>
if it was not possible.</p>
<p>This function enables optimisations when composing trees.  The provided
checksums are not loaded or checked when this function is called.  Instead
the contents will be loaded only when needed.</p>
</div>
<p class="since">Since: 2018.7</p>
</div>
</div>
<div class="refsect1">
<a name="ostree-In-memory-modifiable-filesystem-tree.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="OstreeMutableTree"></a><h3>OstreeMutableTree</h3>
<pre class="programlisting">typedef struct OstreeMutableTree OstreeMutableTree;
</pre>
<p>Private instance structure.</p>
</div>
</div>
</div>
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